a {
    /* 去除下划线 */
    text-decoration: none;
    /* 使用父元素的颜色 */
    color: inherit;
}

.start-box {
    height: 30vh;
    position: relative;
}

.start-btn-box {
    width: 55vw;
    height: 6vh;
    text-align: center;
    background-color: rgb(85, 77, 132);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 1vw;
}

.start-btn-box a {
    line-height: 6vh;
    color: #fff;
}
